Beaches closed due to overflow in Lake Ontario in Mississauga and beyond

Beaches are closed due the heavy rainfall earlier this week.

All three Lake Ontario beaches in Mississauga are posted as unsafe for swimming.

Jack Darling Memorial Park, Lakefront Promenade and Richard’s Memorial Park are posted with a red warning sign.

A red warning sign means levels of bacteria in the water are high enough to pose a risk to your health, according to the Region of Peel. This is a warning that swimming in the water may cause illness.

The closure is related to Tuesday’s heavy rainfall, which saw 97.8 mm fall at Pearson Airport, according to Environment and Climate Change Canada.

The rainfall led to an overflow of a wastewater facility in Mississauga.

Partially treated wastewater from the G. E. Booth wastewater treatment facility in Lakeview was released into Lake Ontario, according to a press release from the Region of Peel earlier this week.

As of Friday (July 19), the beaches were still posted.

Brampton’s Professor’s Lake Beach at 1660 North Park Dr. remains open and safe for swimming.

The same problem is impacting beaches in Toronto where 1.3 billion litres of untreated sewage was reportedly discharged from Toronto water treatment plants.

The contamination could last between five days to two weeks.

To find out more about beaches in the Region of Peel, see the beach water testing page.